After sending an email, it will now be put on hold for 30 seconds, allowing you to cancel the sending.
To enable this feature, turn on "Enable Undo Send" in Advanced Settings.
When you send an email with the Undo Send feature enabled, an "Undo last send" button will appear at the top of the sent page for 30 seconds.
If you press this button within 30 seconds, the last email you sent will not actually be sent and will revert to draft status.
Once the 30 seconds have passed, the message will be sent to the other party and cannot be cancelled.
